I don't have much experience using ChainLink so I cannot provide many details. I want to add a body to my post request the code above is just an example:
Chainlink.Request memory request = buildChainlinkRequest(jobId, address(this), this.fulfill.selector);
// Set the URL to perform the POST request on
request.add("post", "https://rinkeby-light.eth.linkpool.io/");
request.add("body", "{\"id\":0,\"jsonrpc\":\"2.0\",\"method\":\"eth_blockNumber\",\"params\":[]}");
Any ideas because the code above did not work ?